Package com.illumon.iris.db.plot.util.tables

Class TableSnapshot

java.lang.Object

com.illumon.iris.db.plot.util.tables.TableSnapshot

public class TableSnapshot
extends Object

Computes snapshots of a BaseTable. On every table update a snapshot request is given to the FigureTableSnapshotManager. A snapshot is a map from the column name to the columns data.

Field Summary

Fields

Modifier and Type	Field	Description
static TableSnapshot[]	ZERO_LENGTH_ARRAY

Constructor Summary

Constructors

Constructor	Description
TableSnapshot(BaseTable t, ChartImpl chart)
TableSnapshot(BaseTable t, ChartImpl chart, FigureTableSnapshotManager manager)

Method Summary

Modifier and Type	Method	Description
void	addTableSnapshotChangeListener(TableSnapshotChangeListener listener)
void	freeze()	The snapshotReference will not be updated until this is thawed.
Map<String,Object>	getSnapshotData()
BaseTable	getTable()
void	onClose()	Operations to perform once a plot is closed.
void	removeTableSnapshotChangeListener(TableSnapshotChangeListener tableSnapshotChangeListener)	Removes specified table snapshot change listener
void	removeTableSnapshotChangeListeners()	Removes all table snapshot change listeners
boolean	thaw()	createSnapshot will once again update the snapshotReference.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ZERO_LENGTH_ARRAY

public static final TableSnapshot[] ZERO_LENGTH_ARRAY

Constructor Details

TableSnapshot

public TableSnapshot(BaseTable t, ChartImpl chart)

TableSnapshot

public TableSnapshot(BaseTable t, ChartImpl chart, FigureTableSnapshotManager manager)

Method Details

getTable

public BaseTable getTable()

getSnapshotData

public Map<String,Object> getSnapshotData()

freeze

public void freeze()

The snapshotReference will not be updated until this is thawed.

thaw

public boolean thaw()

createSnapshot will once again update the snapshotReference. snapshotReference will be set to the last snapshot constructed during the freeze, if one exists.

Returns:

whether a snapshot was constructed while frozen

onClose

public void onClose()

Operations to perform once a plot is closed.

addTableSnapshotChangeListener

public void addTableSnapshotChangeListener(TableSnapshotChangeListener listener)

removeTableSnapshotChangeListeners

public void removeTableSnapshotChangeListeners()

Removes all table snapshot change listeners

removeTableSnapshotChangeListener

public void removeTableSnapshotChangeListener(TableSnapshotChangeListener tableSnapshotChangeListener)

Removes specified table snapshot change listener

Parameters:

tableSnapshotChangeListener - listener to remove